Ayup have been fantastic on all fronts. Initial delivery from Australia was only 3 days with full tracking for my v4 adventurer kit(They went to more countries than ive been to) and when I had a minor fault with one of the batteries there warranty department was lightning quick replacement battery within 30 hours of initial email.
Other companies worth a mention that have delivered wihin 24 hours
Stif
tweekcycles
merlin
CRC (last 5 orders placed)